/* ============================================================
   NovaTax SG - Singapore Tax Calculator
   Modern Dashboard-Style CSS
   ============================================================ */

/* --- CSS Variables / Theming --- */
:root,
[data-theme="light"] {
  --bg-primary: #f5f7fa;
  --bg-secondary: #ffffff;
  --bg-tertiary: #eef1f6;
  --bg-card: #ffffff;
  --bg-hover: #f0f3f8;
  --bg-input: #f8f9fc;
  --bg-nav: rgba(255, 255, 255, 0.85);

  --text-primary: #1a1d23;
  --text-secondary: #4b5563;
  --text-tertiary: #9ca3af;
  --text-inverse: #ffffff;

  --accent: #4f46e5;
  --accent-light: #818cf8;
  --accent-bg: #eef2ff;
  --accent-hover: #4338ca;

  --success: #059669;
  --success-bg: #ecfdf5;
  --warning: #d97706;
  --warning-bg: #fffbeb;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --info: #2563eb;
  --info-bg: #eff6ff;

  --border: #e5e7eb;
  --border-focus: #4f46e5;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.1);

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;

  --gradient-hero: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
  --gradient-card: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

[data-theme="dark"] {
  --bg-primary: #0f1117;
  --bg-secondary: #1a1d27;
  --bg-tertiary: #242836;
  --bg-card: #1e2230;
  --bg-hover: #262a3a;
  --bg-input: #242836;
  --bg-nav: rgba(15, 17, 23, 0.9);

  --text-primary: #f1f5f9;
  --text-secondary: #94a3b8;
  --text-tertiary: #64748b;
  --text-inverse: #0f1117;

  --accent: #818cf8;
  --accent-light: #a5b4fc;
  --accent-bg: #1e1b4b;
  --accent-hover: #6366f1;

  --success: #34d399;
  --success-bg: #064e3b;
  --warning: #fbbf24;
  --warning-bg: #451a03;
  --danger: #f87171;
  --danger-bg: #450a0a;
  --info: #60a5fa;
  --info-bg: #1e3a5f;

  --border: #2d3348;
  --border-focus: #818cf8;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 8px 30px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 20px 60px rgba(0, 0, 0, 0.5);

  --gradient-hero: linear-gradient(135deg, #312e81 0%, #4c1d95 50%, #6b21a8 100%);
  --gradient-card: linear-gradient(135deg, #4338ca 0%, #5b21b6 100%);
}

/* --- Reset & Base --- */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
  transition: background 0.3s ease, color 0.3s ease;
  -webkit-font-smoothing: antialiased;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.35rem; }
h4 { font-size: 1.125rem; }

p {
  color: var(--text-secondary);
  line-height: 1.7;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.2s;
}

a:hover {
  color: var(--accent-hover);
}

/* --- Navigation --- */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-nav);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-primary);
  text-decoration: none;
}

.nav-logo .logo-icon {
  width: 36px;
  height: 36px;
  background: var(--gradient-hero);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 0.9rem;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  transition: all 0.2s;
  text-decoration: none;
}

.nav-link:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav-link.active {
  color: var(--accent);
  background: var(--accent-bg);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

#theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-secondary);
  color: var(--text-secondary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
}

#theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  background: var(--accent-bg);
}

.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-nav-toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-nav-toggle.open span:nth-child(2) {
  opacity: 0;
}

.mobile-nav-toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem;
}

.page-header {
  margin-bottom: 2rem;
}

.page-header h1 {
  margin-bottom: 0.5rem;
}

.page-header p {
  font-size: 1.05rem;
}

/* --- Cards --- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.3s, border-color 0.3s;
}

.card:hover {
  box-shadow: var(--shadow-md);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.25rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.card-header h3 {
  display: flex;
  align-items: center;
  gap: 8px;
}

.card-header .card-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.card-icon.blue { background: var(--info-bg); color: var(--info); }
.card-icon.green { background: var(--success-bg); color: var(--success); }
.card-icon.purple { background: var(--accent-bg); color: var(--accent); }
.card-icon.orange { background: var(--warning-bg); color: var(--warning); }
.card-icon.red { background: var(--danger-bg); color: var(--danger); }

/* --- Grid Layouts --- */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.calc-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 1.5rem;
  align-items: start;
}

/* --- Hero Section --- */
.hero {
  background: var(--gradient-hero);
  border-radius: var(--radius-lg);
  padding: 4rem 3rem;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
  color: white;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  right: -20%;
  width: 500px;
  height: 500px;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 50%;
}

.hero::after {
  content: "";
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  background: rgba(255, 255, 255, 0.03);
  border-radius: 50%;
}

.hero h1 {
  color: white;
  font-size: 2.75rem;
  margin-bottom: 1rem;
  position: relative;
  z-index: 1;
}

.hero p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 1.15rem;
  max-width: 600px;
  margin-bottom: 2rem;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(10px);
  padding: 6px 14px;
  border-radius: 50px;
  font-size: 0.85rem;
  color: white;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  position: relative;
  z-index: 1;
  flex-wrap: wrap;
}

/* --- Calculator Cards (Landing) --- */
.calc-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  text-decoration: none;
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
}

.calc-card:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.calc-card .card-emoji {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}

.calc-card h3 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.calc-card p {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.calc-card .card-arrow {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent);
}

.calc-card:hover .card-arrow {
  gap: 10px;
}

/* --- Forms --- */
.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.form-input,
.form-select {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  color: var(--text-primary);
  font-size: 0.95rem;
  font-family: inherit;
  transition: all 0.2s;
  outline: none;
}

.form-input:focus,
.form-select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--accent-bg);
}

.form-input::placeholder {
  color: var(--text-tertiary);
}

.form-input.input-error {
  border-color: var(--danger);
  box-shadow: 0 0 0 3px var(--danger-bg);
}

.form-hint {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  margin-top: 4px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.input-prefix {
  position: relative;
}

.input-prefix .prefix {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-tertiary);
  font-weight: 500;
  font-size: 0.9rem;
  pointer-events: none;
}

.input-prefix .form-input {
  padding-left: 32px;
}

/* Checkbox / Toggle */
.form-check {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.form-check input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--accent);
  cursor: pointer;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  transition: all 0.2s;
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: white;
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--bg-hover);
  border-color: var(--text-tertiary);
}

.btn-outline {
  background: transparent;
  color: white;
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: white;
  color: white;
}

.btn-hero {
  padding: 12px 28px;
  font-size: 1rem;
  border-radius: var(--radius-sm);
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.8rem;
}

.btn-danger {
  background: var(--danger-bg);
  color: var(--danger);
}

.btn-danger:hover {
  background: var(--danger);
  color: white;
}

.btn-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

/* --- Results / Summary --- */
.results-card {
  position: sticky;
  top: 80px;
}

.result-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.result-row:last-child {
  border-bottom: none;
}

.result-row .label {
  color: var(--text-secondary);
}

.result-row .value {
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.result-total {
  background: var(--accent-bg);
  border-radius: var(--radius-sm);
  padding: 1rem 1.25rem;
  margin-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.result-total .label {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 1rem;
}

.result-total .value {
  font-weight: 800;
  color: var(--accent);
  font-size: 1.35rem;
  font-variant-numeric: tabular-nums;
}

/* --- Tax Breakdown Table --- */
.breakdown-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.875rem;
  margin-top: 1rem;
}

.breakdown-table th {
  text-align: left;
  padding: 10px 12px;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.breakdown-table th:first-child {
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.breakdown-table th:last-child {
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  text-align: right;
}

.breakdown-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

.breakdown-table td:last-child {
  text-align: right;
  font-weight: 600;
}

.breakdown-table tr:last-child td {
  border-bottom: none;
}

.breakdown-table .highlight-row td {
  background: var(--accent-bg);
  font-weight: 700;
  color: var(--accent);
}

/* --- Expandable Sections --- */
.expandable {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.75rem;
  overflow: hidden;
}

.expandable-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  background: var(--bg-tertiary);
  cursor: pointer;
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-primary);
  transition: background 0.2s;
  user-select: none;
}

.expandable-header:hover {
  background: var(--bg-hover);
}

.expandable-header .chevron {
  transition: transform 0.2s;
}

.expandable.open .expandable-header .chevron {
  transform: rotate(180deg);
}

.expandable-body {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.expandable.open .expandable-body {
  max-height: 2000px;
}

.expandable-content {
  padding: 16px;
}

/* --- Tooltip --- */
.tooltip-icon {
  position: relative;
  display: inline-flex;
  align-items: center;
  color: var(--text-tertiary);
  cursor: help;
}

.tooltip-text {
  display: none;
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--text-primary);
  color: var(--bg-primary);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 400;
  white-space: nowrap;
  max-width: 280px;
  white-space: normal;
  z-index: 50;
  box-shadow: var(--shadow-lg);
  line-height: 1.4;
}

.tooltip-icon:hover .tooltip-text,
.tooltip-icon:focus .tooltip-text {
  display: block;
}

/* --- Alerts / Notices --- */
.notice {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 1rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  line-height: 1.5;
  margin-bottom: 1.5rem;
}

.notice-info {
  background: var(--info-bg);
  color: var(--info);
  border: 1px solid currentColor;
  border-color: rgba(37, 99, 235, 0.2);
}

.notice-warning {
  background: var(--warning-bg);
  color: var(--warning);
  border: 1px solid currentColor;
  border-color: rgba(217, 119, 6, 0.2);
}

.notice-icon {
  flex-shrink: 0;
  margin-top: 2px;
}

/* --- Stats Row --- */
.stats-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  text-align: center;
}

.stat-card .stat-value {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.25rem;
}

.stat-card .stat-label {
  font-size: 0.8rem;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-weight: 600;
}

/* --- Disclaimer --- */
.disclaimer {
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 1.5rem 2rem;
  margin: 3rem 0 1rem;
  text-align: center;
}

.disclaimer p {
  font-size: 0.85rem;
  color: var(--text-tertiary);
}

.disclaimer a {
  color: var(--accent);
  font-weight: 500;
}

/* --- Footer --- */
.footer {
  text-align: center;
  padding: 2rem;
  color: var(--text-tertiary);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
  margin-top: 2rem;
}

/* --- Features Grid (Landing) --- */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
  margin-bottom: 3rem;
}

.feature-item {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.feature-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  flex-shrink: 0;
  background: var(--accent-bg);
  color: var(--accent);
}

.feature-item h4 {
  margin-bottom: 4px;
  font-size: 0.95rem;
}

.feature-item p {
  font-size: 0.85rem;
}

/* --- About Page --- */
.content-section {
  margin-bottom: 2.5rem;
}

.content-section h2 {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 10px;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 1rem;
}

.info-table th,
.info-table td {
  padding: 10px 14px;
  text-align: left;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}

.info-table th {
  background: var(--bg-tertiary);
  font-weight: 600;
  color: var(--text-secondary);
}

.info-table td {
  color: var(--text-primary);
}

/* --- Print Styles --- */
@media print {
  .navbar,
  .hero,
  .btn-group,
  #theme-toggle,
  .mobile-nav-toggle,
  .notice,
  .footer {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .card {
    border: 1px solid #ddd;
    box-shadow: none;
    break-inside: avoid;
  }

  .container {
    max-width: 100%;
    padding: 1rem;
  }

  .calc-layout {
    grid-template-columns: 1fr;
  }

  .results-card {
    position: static;
  }
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }

  .results-card {
    position: static;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg-nav);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    gap: 4px;
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .hero {
    padding: 2.5rem 1.5rem;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .container {
    padding: 1.25rem;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .calc-cards {
    grid-template-columns: 1fr;
  }

  .stats-row {
    grid-template-columns: 1fr 1fr;
  }

  h1 { font-size: 1.75rem; }
  h2 { font-size: 1.4rem; }

  .hero-actions {
    flex-direction: column;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .stats-row {
    grid-template-columns: 1fr;
  }

  .card {
    padding: 1.25rem;
  }

  .result-total .value {
    font-size: 1.15rem;
  }
}

/* --- Animations --- */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

.fade-in {
  animation: fadeIn 0.4s ease forwards;
}

/* Staggered animation for cards */
.calc-cards .calc-card:nth-child(1) { animation-delay: 0.1s; }
.calc-cards .calc-card:nth-child(2) { animation-delay: 0.2s; }
.calc-cards .calc-card:nth-child(3) { animation-delay: 0.3s; }

/* --- Chart Bar (simple CSS bar chart) --- */
.bar-chart {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 1rem;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.bar-label {
  width: 120px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  text-align: right;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 24px;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: var(--accent);
  border-radius: var(--radius-sm);
  transition: width 0.5s ease;
  min-width: 2px;
}

.bar-value {
  width: 80px;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* --- Section Divider --- */
.section-divider {
  text-align: center;
  margin: 3rem 0 2rem;
}

.section-divider h2 {
  margin-bottom: 0.5rem;
}

.section-divider p {
  font-size: 0.95rem;
}

/* --- Sample Data Banner --- */
.sample-banner {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--warning-bg);
  color: var(--warning);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 1rem;
}

.sample-banner.show {
  display: flex;
}

/* --- Scrollbar --- */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--text-tertiary);
}

/* --- Tab selector --- */
.tab-group {
  display: flex;
  background: var(--bg-tertiary);
  border-radius: var(--radius-sm);
  padding: 3px;
  gap: 3px;
  margin-bottom: 1.25rem;
}

.tab-btn {
  flex: 1;
  padding: 8px 16px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: inherit;
}

.tab-btn.active {
  background: var(--bg-card);
  color: var(--text-primary);
  box-shadow: var(--shadow-sm);
}

.tab-btn:hover:not(.active) {
  color: var(--text-primary);
}